Brian Mitchell | Associated PressDetroit Mayor Kwame Kilpatrick attends a hearing in 36th District Court Thursday, Aug. 7, 2008 in Detroit, Mich. Kilpatrick has been ordered to the county jail after a judge found the mayor violated the terms of his bond by going to Canada and not informing the court.

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DETROIT, Michigan -- Mayor Kwame Kilpatrick spent the night in a one-man jail cell with no TV and a phone only for collect calls, the consequence of violating his bond in a criminal case that has dogged him for months.

His legal problems could get much worse.

State police have wrapped up an investigation of a confrontation between Kilpatrick and a sheriff's detective, who claims he was pushed while recently trying to serve a subpoena on the mayor's friend.

Michigan Attorney General Mike Cox scheduled a 10 a.m. news conference today to announce the results. Kilpatrick's legal team was not optimistic, predicting that some type of charge was a "done deal."

"If they want to bring the charges, let's go. It's the only way to get it resolved," attorney Jim Parkman said.

Separately, the mayor and a former top aide are charged with perjury, misconduct and obstruction of justice, all tied to their testimony in a civil trial last year. At the heart of that case: steamy text messages contradicting their claim that they didn't have a romantic relationship.

To remain free while the case moves through court, Kilpatrick was required to notify authorities about business that required out-of-state travel.

He admitted violating that condition when he went to Windsor, Ontario -- minutes from Detroit -- on July 23 to discuss the sale of the city's portion of a tunnel connecting the U.S. and Canada. He didn't call prosecutors or 36th District Court.

"I'm asking for another chance," the mayor pleaded Thursday to Judge Ronald Giles.

The judge's response was swift and surprising: Jail for the leader of the country's 11th-largest city.

"I don't claim to have a good understanding of what your responsibilities are. ... But I have to look at how the (court) system is run and perceived by the public," Giles told the mayor.

Wayne County Circuit Judge Thomas E. Jackson was scheduled to hear an appeal of the order at 9 a.m. today.

Defense attorney Jim Thomas called Giles' ruling "extreme." Parkman said they would propose an electronic tether or some other conditions to get Kilpatrick out of the county jail.

Kilpatrick was transported to jail in a sheriff's van, photographed, given a green jumpsuit and placed in a one-man cell for high-profile people.

Although not in the general jail population, the mayor was being treated like any other prisoner -- "no better, no worse," Sheriff Warren Evans said.

Earlier Thursday, Kilpatrick and Christine Beatty waived their right to a preliminary exam in the perjury case. That means those charges now go directly to Wayne County Circuit Court. Arraignment for the pair was set for Thursday. Both deny the charges.

Deputy Mayor Kandia Milton said he is running the city while Kilpatrick is in jail.

"Detroit's government will continue to operate as usual. ... Trash will continue to be collected, recreation centers will remain open, grass will be cut and fires will be extinguished," a statement from the mayor's office said.

City Council President Ken Cockrel Jr. would succeed Kilpatrick if the mayor resigns or is forced from office.

In May, the Detroit City Council asked Gov. Jennifer Granholm to invoke a little-used state law and remove Kilpatrick from office for misconduct. A hearing is scheduled for Sept. 3.